Hello!
I faced with issue when I'm trying to delete old events using command " | delete". I find all events that I need in date range and then enter | delete command. After that scan is started and never ended. In job inspector I see component "dispatch.fetch.rcp.phase_0" with increasing Invocations and duration values. What could cause this issue? Why the delete job was not finished? Splunk Enterprise Server 7.2.5.1, two indexes in cluster, two search head in cluster.
Can you perhaps add a screenshot of how you are doing the |delete command?